Biomedical subjects

Joan Mayfield

Publications and source records attributed to Joan Mayfield.

3 recordsLinked to original sources

PubMed2006

Validity of the Children's Category Test-Level 1 in a clinical sample with heterogeneous forms of brain dysfunction.

Validity of the Children's Category Test-Level 1 (CCT-1) was evaluated in 123 children with various forms of brain dysfunction. Confirmatory factor analyses indicated that the CCT-1 is composed of two factors. The first factor was composed of subtests II and III, and was named "Conceptual Discrimination", while the second was composed of subtests IV and V, and was named "Conceptual Memory". Both factors were more highly correlated with mathematical achievement than with reading or writing achievement. Comparisons between traumatic brain injury (TBI) and Attention-Deficit/Hyperactivity Disorder (ADHD) groups indicated that the Conceptual Discrimination factor was more sensitive to TBI than the Conceptual Memory factor. Also, the total error composite T-score was not particularly sensitive to ADHD. Findings indicate that the composite T-score should be interpreted with caution because it does not appear sensitive to milder forms of brain dysfunction and because the CCT-1 is a multidimensional procedure.

Brain Diseases↗

PubMed2005

Latent factor structure of the Test of Memory and Learning in a pediatric traumatic brain injured sample: support for a general memory construct.

The Test of Memory and Learning (TOMAL; Reynolds, C. R., & Bigler, E. D. (1994a). Test of Memory and Learning (TOMAL). Austin, Texas: Pro-Ed; Reynolds, C. R., & Bigler, E. D. (1994b). Test of Memory and Learning (TOMAL): Examiner's manual. Austin, Texas: Pro-Ed) was published to ameliorate the paucity of developmentally appropriate instruments for the assessment of memory in children and adolescents. No studies have confirmed the latent factor structure of the TOMAL. Two structural models were subjected to confirmatory factor analysis using the TOMAL performances of 140 subjects, age 5-19, with traumatic brain injury (TBI). Model 1 was a four-factor model with a large "Complex Memory" factor and three smaller factors. Model 2 was a two-factor model with Verbal and Nonverbal Memory factors, both of which loaded on a second-order "General" memory factor. Results indicated that the model with a higher order structure demonstrated better fit than the four-factor model. Further analysis suggested that the TOMAL factor structure is characterized by a large Complex Memory and smaller, Sustained Attention factor. The study provides tentative support for a "general memory" construct.

Adolescent↗

PubMed2004

Memory functioning in children with traumatic brain injuries: a TOMAL validity study.

Traumatic brain injury (TBI) leads the causes of death and disability among children and adolescents. Despite the prevalence of TBI among children, few studies have examined memory in children. The purpose of this study was to compare memory functioning, as measured by the Test of Memory and Learning (TOMAL), of children with and without TBI and with moderate and severe TBI to determine if differences existed. Of the 140 participants, 70 had sustained a head trauma and 70 served as controls. The results indicated that, when the TBI and control group were compared, significant differences were found on all of the TOMAL indexes. With the exception of the verbal delayed recall items, significant differences were demonstrated on all the TOMAL subtests. No differences were identified when moderate and severe groups were compared. These findings further the understanding of memory following pediatric TBI, as well as have implications for interventions with this population.

Adolescent↗